First, double-check that you've entered your payment information correctly, including the correct card numbers and ensure that the payment method is valid. Also, make sure you've entered all necessary information (an extra number; a date). For example, did you know that your Maestro card has a CVV number for online purchases? You can request this number from your bank.
If the issue persists, contact us using the contact form in your app with all possible information: a screenshot, the action causing the issue, any error messages that appear... Our Happiness Team will be happy to assist you! 🥰